Grating anchor



Oct. 23, 19.51 w, BATES 2,572,432

GRATING ANCHOR FilE d OGt. 19, 1946 INVENTOR. Wa/Zer a 54256.9;

Patented Oct. 23, 1951 UN STATES? 2,572,432 GRATING ANCfiORi'i.

Walter *A. Bate -Juliet,lurassignorto Beulah H.- ,Bates,Jliet,-1Ill-.:

Ap lication-pewter 19, 1946; Seria'l'NoL 704,421: claims (01.189f-'-84-),;-1-

The present inventionrelates to=lmprovements' in-grating anchors.

More particularly, the present inventionfrelatcs to means foranchoring-gratings suchy-forLexama ple; asthose used in the floorsofinduStriaIpIantsJ 5 and the like. Gratingsof "the kind 5 referredtoare commonl formed-of-aplurality-of parallelfi bars called main barsconnected .by-mea-ns of-cross bars, theassembly forming auni't adaptedto be supported-upon side members which" may-take theform of structuralsteel shapes of well known contour." The'present applicant on-March"1,-1946.jfiled an application-entitled Anchors for Gratings, SerialNo.651,219, which relates to the same general subject matter-asthepresent-invention. The presentinvention has for -one -of-its objects theprovision of a grating anchor'whi'ch includes advantages of thesubject-matter-of: the appli cation-aforesaid and embodies-furtheradvantagesw A further object-is to provide an improved grating-anchorreadilyapplicable't'ogratings of known design, which is simple inconstruction and easy to assemble anddisassemble when-the grating-islocated in operative position-uponthe supportirrgmembers therefor.

A further object is toprovide-a grating anchor well adapted to meet theneeds"of'ordinar-yservicei Referring to the drawings; 7 I

Figure 1 is a 'viewin sec-tionalelevationtaken through a e gratinghaving applied--- theretd -0ne 11 embodiment of thepresent inventionyFigure 2 isa top=p1an view or the structure shown in Figure l Figure 3is a: sectional view-takerr along thm plane indicated by the-arrows-3'3i Figure-1;"

Figure 4 is a perspective -view--of ='a clamping member forming partofthestructureillustrated in the preceding figures; and v Figure 5 is afragmentary view similar to a-por tion of Figure 1 but illustratingasligh-t modifica tion.

The numerals 1 0 0 indicate themain bars of a grating; Thenum'erals---||'- 'indicate 'cri s" bars which extend'throug-haperturesin-Said h'rain bars and hold said main bars sec'ur'elyin spaced 45,

parallel relationship. The top edges' of saidPfn'a-i'n bars -||l||]ordinarilylie-in*a-single= plafie and the bottom edges of said mainbars-lie inanothei plane. The numeral 12' indicates -an ang-le mem ber-presenting' a horizontal flange 12 a for the-- reception of ends of theinainbars lll lflf- An anchor for holding "the gratin n-position on theangle member- 12 isindicated as a-whole by the numera1'-|3. Said-anchorcOm'prises tIie following partst-The holding member fl "tlie bolt l 5and the clamping --menrber*or blami9 3* The holding memberl 4 may beinade of 'js'h'ee't metal which may be stamped out; of a hatsheenandswedged into the shape illustrated men-ere 1,"2"and 3.Said'holdir'i'g member-l4 include i elongated leg-portion'll the-bentover portion 8 and the shorter leg portion l9 provided-'with' the flange20*having' an aperture therein not"illu's-*'* trated) The-legs I! and19" are spacedapart'a distance slightly-greater than the thi ckne'ss of-a main bar ID; The clamp |6*is-a-*membe'r; pref-" erably' of metal,bent -upon itself-to form-a leg 2| which at the bend 23 connected Wi-thtlie leg-24." The leg' 24 is-- Wdged out 'of -align 1nent with the leg2| in a manner illustrated in' Fig ures 2 and 4. The leg 24 is'longerthan the leg 2F and is provided with a n elongated -slcitindicatedby the numeral 25fthe material at -each' 'side'of' the slot 25 being'thickened as' indi'c'ated by -the' numeral 26 for thepurposeof"reinforcing the metal of the clamp at'that region.

Informing the slot-of-theleg-M ofthe gimp- It, said leg 24' may beslit'longitudinally-andthe two edges of said leg 24 adjacentto-sai'ds'lotma'y'"' be'rolledthrough an angle of degrees, having; theeffect of spreading the metal to providethe' slot 25 at this region. Ifthematerial ofthe clamp I6 is approximately one-half inch wide? thematerial at each of the regions 26 wil-l' be'" approximately one-fourthinch deep. By reaso'n of this construction, a clamp l6 "may be usedwhich is relatively narrow giving maximum clear ance for ins'ertio'n ofthe anchor 13 between the" main bars ll] of a grating. Though theclampffli may be relatively narrow, the reinforced portions 26-26provide adequate strength. The clamp l 6 may be made of spring metal.

The bolt I5 is provided with the head 21-' hav-'- inga screw driverslot'therein. The"shank "28-= of the bolt 15 has the nut 29 threadedthereon Said nut is illustrated as-being squarem crasssection, thisbeing a shapewhich 'is-useful'-"for cooperation with the elongated leg1' of the holdings. member l4; Thelower-extremity of theshank 28 of 'thebolt I5 is upset as indicated byth'e um-em 30'whereby to prevent loss ofthe nut 2 9; Itwill be understood, of course, that the -upsetting" op-'eration will be performed after-thebolt -|5 has been inserted into theaperturein thefiange -20 and into the slot 2501 the clamp l6 and 'after'the nut 29 has'been threaded upon the'shank 28-- of said bolt.

In-order that the leg 2| of the clamp It may underlie a main bar 'lllapproximately symmet rically therewith, the corner of theleg 2| above=-=the slot-'25 may be notched out as lndicatedby the numer al-3|-.-Th'is-will--allow said-leg2| td' 'clar awmsg the leg portion I I of theholding member I4. After the grating (which includes the main bars I andcross bars I I) has been located upon 'the horizontal flange I2a of theangle member I2, said grating may be anchored in place by applying theanchor I3 thereto from above said grating. The bolt I5 will be loosenedand the clamp I6 will be turned into a position wherein it is readilyinsertable between adjacent main bars I0-I0. Due to the fact that theslot 25 is much longer than the diameter of the shank' 28 of the boltI5, the clamp 2| may be tipped into acute angular relationship with thebolt I5, so that the anchor may be inserted through a relatively smallopening from above the grating. The holding member I4 will be locatedupon one of the main bars I0, said main bar being disposed between thelegs I! and I9, the intermediate portion I8 of the anchor resting uponthe top of said main bar. The clamp I6 will be turned into the positionillustrated in Figure 2 wherein the leg 24 of said clamp underlies thehorizontal flange I2a of the anchor member I2. By reason of the factthat the free extremity of the leg 2| of the clamp I6 is notched out asindicated by the numeral 3|, said leg 2| may occupy a positionapproximately symmetrical with the adjacent main bar I0, the leg ll ofthe holding member I4 being disposed within said notch 3|. The bolt I5will then be turned within the nut 29 until the clamp I6 is put undersufficient tension to hold the grating securely in position on the anglemember I2. The shank 28 of the bolt I5 Will assume an angular positionrelative to the leg I! of the holding member I4 and the nut 29 willengage said leg I1 whereby the accidental turning of said nut 29 will beprevented.

In service, difierent thicknesses of the horizontal flange I2a of theangle member I2 will be encountered, and for this reason it is desirableto provide a clamp I6 which will accommodate a variation of thicknessesof this horizontal flange. According to the disclosure of Figure 5, theclamp I6 has a bend of relatively large radius between the leg 2| andthe leg 24 of said clamp. In order to facilitate the bending of theclamp I6 at the portion 23, the said portion at an intermediate regionthereof may be notched as indicated by the numeral 32. By reason of thethickened portions 26, the leg 24 may be reinforced without widening theclamp I6 whereby material is conserved.

The grating anchor as illustrated and described requires a minimum ofmaterial, is adapted for application to a grating or the like even incramped places, may be readily mounted and dismounted from above thegrating and will hold the grating securely in position upon thehorizontal supporting member.

Though certain preferred embodiments of the present invention have beendescribed in detail, many modifications will occur to those skilled inthe art. It is intended to cover all such modifications that fall withinthe scope of the appended claims.

What is claimed is:

1. In an anchor, in combination, a holding member, a clamping member, abolt having a head and a nut for said bolt, said holding member being anelongated member bent intermediate of its length to provide two legsadapted to loop over a grating bar or the like, one of said legs havingan outstanding flange, the other of said legs extending a materialdistance beyond said first mentioned leg, said flange having an daperture, said clamping member being an elon gated member bentintermediate of its ends to form two clamping portions, said clampingportions being disposed outof registry with each other, one of saidclamping portions having an opening therein, said bolt being located insaid aperture and in said opening, said nut being located on said bolt,the other of said clamping portions being adapted to underlie saidgrating bar, said head of said bolt and said nut being located inpositions wherein they are adapted to exert pressure upon saidholdingmember through said flange and upon said clamping member to pull themtoward each other to grip said grating bar.

2. In an anchor, in combination, a holding member, a clamping member, abolt having a head and a nut for said bolt, said holding member being anelongated member bent intermediate of its length to provide two legsadapted to loop over a grating bar or the like, one of said legs havingan outstanding flange, the other of said legs extending a materialdistance beyond said first mentioned leg, said flange having anaperture, said clamping member being an elongated member bentintermediate of its ends to form two clamping portions, said clampingportions being disposed out of registry with each other, one of saidclamping portions having an opening therein, said bolt being located insaid aperture and in said opening, said nut being located on said bolt,said opening being elongated in the direction of the length of itscorresponding clamping portion, the other of said clamping portionsbeing adapted to underlie said grating bar, said head of said bolt andsaid nut being located in positions wherein they are adapted to exertpressure 'upon said holding member through said flange and upon saidclamping member to pull them toward each other to grip said grating bar.

3. In an anchor, in combination, a holding member and a clamping member,a bolt having a head and a nut for said bolt, said holding membercomprising an elongated member having a U-turn intermediate of itslength to provide a long leg and a short leg, said short leg beingprovided with an apertured out-turned flange, said clamping memberhaving a U-turn intermediate of its length to provide two clampingportions, said clamping portions being angularly disposed out ofregistry with each other, one of said clamping portions having anopening therein,

said bolt being located in said apertured flange and in said opening,said nut being located upon said bolt, the other of said clampingportions being adapted to be positioned facing said U-turn, said head ofsaid bolt and said nut being located in positions wherein they areadapted to exert loop over a grating bar or the like, one of said legshaving an outstanding flange, said flange having an aperture, saidflanged leg being materially shorter than the other of said legs, saidclamping member having a U-turn intermediate of its length to providetwo clamping portions, said clamping portions being disposed out ofalignment with each other, one of said clamping portions having anopening therein for receiving said bolt, said bolt extending throughsaid aperture and through said opening in said clamping member, theother of said clamping portions being notched whereby said otherclamping portion may clear said holding member, the other of saidclamping portions being adapted to underlie said grating bar, said headof said bolt and said nut being located in positions wherein they areadapted to exert pressure upon said holding. member through said flangeand upon said clamping member to pull them toward each other to gripsaid grating bar.

5. In combination, a grating having main bars disposed in parallelrelationship with each other, said main bars being secured together, ahorizontal supporting member at the extremities of said main bars, ananchor securing said grating to said supporting member, said anchorincluding 25 of said main bars, said short leg being provided with aflange at its extremity, said flange having an aperture, the other ofsaid legs extending downwardly a material distance below said supportingmember, said clamping member being bent intermediate of its length toform two clamping portions disposed out of alignment with each other,one of said clamping portions having an opening, said bolt extendingthrough said opening and through said aperture, the other of saidclamping portions underlying said one main bar, said first mentionedclamping portion being positioned underneath said horizontal supportingmember, said head of said bolt and said nut being located in positionsto exert pressure upon said flange and upon said first mentionedclamping portion of said clamping member to pull them toward each otherto force said main bar of said grating and said supporting member intoengagement with each other. WALTER A. BATES.

REFERENQES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,707,533 Nagin Apr. 2, 19292,117,519 Snyder May 17, 1938 2,175,453 Barcy Oct. 10, 1939

